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Nuclear Physics with Neutrons - Fundamental
and Applied Investigations

Experiments at IREN:

• Determination of the neutron beam parameters of the IREN facility. Test of the detector complex and equipment at the IREN neutron beam.
  
  
• Measurement of the energy dependence of the radiative neutron capture by the ²⁰⁷Pb isotope within energy range from thermal up to 10 eV. Search for negative p-wave resonances of lead isotopes and their relation with parity violation effects in interactions of polarized neutrons with lead.
  
  
• Investigation of interference effects in reactions ³⁵Cl(n, p) ³⁵S and ¹⁴N (n,p) ¹⁴C in the resonance neutron energy range.
  
  
• Creation of sample irradiation channels with pneumatic transport at IREN.

Obtaining of new experimental data on characteristics
of the neutron as an elementary particle:

• Carrying out of the first in the world experiment on direct measurement of n,n-scattering length at the JAGUAR reactor, Snezhinsk. Continuation of measurements.
  
  
• Start of measurements of n,e-scattering length b_ne at the neutron source in Troitsk.
  
  
• Experimental verification of equivalence principle for the neutron.

Experiments with ultracold neutrons in ILL:

• Investigation of interactions of neutrons with nanoparticles. Examining of possibility of construction of UCN source of ultrahigh density.
  
  
• Investigation of interactions of UCN with matter. Investigation of "weak" UCN heating on the surface of solids; measurement of inelastic and quasi-elastic UCN scattering spectra. Measurement of double differential scattering cross section of UCN at condensed nanostructures in superfluid helium.

Investigations of violations of fundamental symmetries
in neutron-nucleus interactions:

• Carrying out feasibility calculations for the experimental measurement of PT non-invariant effects with spontaneous gamma-ray sources or at a neutron beam. Preparation of equipment for target polarizartion and alignment and its measurement. Modernization of the cryostat.
  
  
• Measurement of P-odd effect in asymmetry of gamma-quanta from the reaction ¹⁰B(n,) ⁷Li ^{* 7}Li in ILL.

Investigations of properties of atomic nuclei:

• Search for rare modes of nuclear fission. Test experiment on feasibility of quaternary fission study using pixel detectors MEDIPIX. Preparation of experiment to search for quinary decay.
  
  
• Preparation of experiments to study vibrational resonances of fissioning nuclei and to measure fission cross sections of minor actinides at the n-TOF source (CERN).

Applied research:

• Development of nuclear-physical techniques for element analysis of solids on accelerated particle beams of the electrostatic generator EG-5.
  
  
• Continuation of the mathematical and physical modeling and calibration of neutron detectors for space vehicles MSL 2009 and LRO 2008.
  
  
• Project REGATA. Investigation of atmospheric heavy metal depositions in a number of regions of Central Russia and in the Southern Urals, in Bulgaria, Croatia, Egypt, Greece, Macedonia, Mongolia, Poland, Romania, Serbia, South Korea, Turkey and Vietnam. Continuation of investigations using NAA in ecology, medicine, biotechnology and development of new materials (synthesis of fine-crystalline diamonds).
  
  

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